JP2020524435A - Short burst channel design and multiplexing - Google Patents

Abstract

Certain aspects of the present disclosure relate to methods and apparatus for short uplink burst design. In some cases, a sequence from the multiple sequences may be transmitted within multiple tones of at least one short burst symbol carrying at least one information bit. Multiple sequences may have the same value in a first set of common tone locations for a demodulation reference signal (DMRS), groups of sequences from multiple sequences may be identified, and each sequence within a group may be identified. It has a second set of common tone locations for DMRS.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application claims priority and benefit to U.S. Provisional Patent Application No. 62/521,297 filed June 16, 2017 U.S. Application No. 16 filed June 15, 2018 No. 0/010,001, which is hereby incorporated by reference in its entirety.

The present disclosure relates generally to communication systems, and more particularly to methods and apparatus for handling short burst transmissions, eg, in New Radio (NR) technology.

Wireless communication systems are widely deployed to provide various telecommunication services such as telephone, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (eg, bandwidth, transmit power). Examples of such multiple access technologies are Long Term Evolution (LTE) systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access. Includes (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

In some examples, a wireless multiple-access communication system may include a number of base stations, each simultaneously supporting communication for multiple communication devices, also known as user equipments (UEs). In an LTE or LTE-A network, a set of one or more base stations may define an eNodeB (eNB). In other examples (e.g., in next generation or 5G networks), a wireless multiple-access communication system communicates with several aggregation units (CUs) (e.g., central node (CN), access node controller (ANC), etc.). May include several distributed units (DU) (e.g. edge unit (EU), edge node (EN), radio head (RH), smart radio head (SRH), transmit/receive point (TRP), etc., aggregated A set of one or more distributed units that communicate with a unit is an access node (e.g., a new radio base station (NR BS), a new radio node-B (NR NB), a network node). , 5G NB, eNB, next generation Node B (gNB), etc.) may be defined. A base station or DU is a UE on a downlink channel (e.g., for transmission from a base station or to a UE) and an uplink channel (e.g., for transmission from a UE to a base station or distributed unit). You may communicate with the set.

These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that allows different wireless devices to communicate in cities, countries, regions, and even globally. One example of an emerging telecommunications standard is New Radio (NR), eg 5G radio access. NR is a set of extensions to the LTE mobile standard published by the 3rd Generation Partnership Project (3GPP). It improves spectrum efficiency, reduces costs, improves services, takes advantage of new spectrum, and uses OFDMA with cyclic prefix (CP) on the downlink (DL) and uplink (UL). It is designed to better support mobile broadband Internet access, as well as support beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation by better integrating with the Open standards of

However, as the demand for mobile broadband access continues to grow, further improvements in NR technology are desired. Preferably, these improvements should be applicable to other multiple access technologies and telecommunications standards that use these technologies.

The systems, methods, and devices of the present disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. Without limiting the scope of this disclosure as expressed by the claims which follow, some features are now briefly described. After considering this description, and in particular after reading the section entitled "Modes for Carrying Out the Invention", features of the present disclosure include advantages including improved communication between access points and stations in a wireless network. It will be understood how to bring about.

Some aspects provide a method for wireless communication by a receiver. The method generally comprises receiving a sequence transmitted in multiple tones of at least one short burst symbol, the sequence carrying at least one bit of information, and a demodulation criterion. One or more groups of sequence hypothesis having the same value in the first set of common tone locations for the signal (DMRS) and each in the group having a second set of common tone locations for DMRS Identifying the sequence hypothesis, performing channel and noise and interference estimation for each group based on the tone location for DMRS within the group, and channel and noise interference for each group. Using the estimate, evaluate the corresponding sequence hypothesis in the group, and determine the received sequence and the transmitted information bits based on the estimate.

Some aspects provide a method for wireless communication by a transmitter. The method generally involves one or more groups of sequences having the same value in a first set of common tone locations for a demodulation reference signal (DMRS) and a group having a second set of common tone locations for DMRS. Identifying each of the sequences, and transmitting one sequence from the group of sequences within a plurality of tones of at least one short burst symbol to convey at least one information bit.

Some aspects provide a method for wireless communication by a user equipment (UE). The method generally comprises determining resources within a set of resource blocks (RB) allocated for at least one of a short physical uplink control channel (PUCCH) or a short physical uplink shared channel (PUSCH). And determining a pattern for multiplexing at least one type of reference signal (RS) with a short PUCCH or PUSCH, and a short PUCCH or a short PUSCH on the determined resource multiplexed with RS according to the pattern. And sending.

Aspects generally include the methods, apparatus, systems, computer-readable media, and processing systems fully described herein and illustrated by the accompanying figures.

To the accomplishment of the foregoing and related ends, one or more embodiments include the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of one or more embodiments. However, these features are only some of the various ways in which the principles of the various aspects can be utilized, and this description includes all such aspects and their equivalents.

For a better understanding of the above features of the present disclosure, a more specific description briefly summarized above may be made by reference to aspects, some of which are illustrated in the accompanying drawings. Shown in. However, since the present description may lead to other equally effective aspects, the accompanying drawings depict only some typical aspects of the disclosure and are therefore to be considered limiting of the scope of the disclosure. Note that not.

1 is a block diagram conceptually illustrating an exemplary telecommunications system in which aspects of the present disclosure may be implemented. FIG. 6 is a block diagram illustrating an example logical architecture of a distributed RAN according to some aspects of the present disclosure. FIG. 6 illustrates an exemplary physical architecture of a distributed RAN according to some aspects of the present disclosure. FIG. 3 is a block diagram conceptually illustrating an exemplary BS and user equipment (UE) design, according to some aspects of the present disclosure. FIG. 6 illustrates an example for implementing a communication protocol stack according to some aspects of the present disclosure. FIG. 6 is a diagram illustrating an example of DL-centric subframes according to some aspects of the present disclosure. FIG. 6 is a diagram illustrating an example of a UL-centric subframe according to some aspects of the present disclosure. FIG. 6 is a diagram illustrating an example uplink and downlink structure. FIG. 6 is a diagram illustrating an example uplink and downlink structure. FIG. 6 illustrates an exemplary shifted sequence that may be used to convey one or two bits of information. FIG. 6 illustrates an exemplary shifted sequence that may be used to convey one or two bits of information. FIG. 6 illustrates example operations for wireless communication by a receiver in accordance with aspects of the disclosure. FIG. 6 illustrates example operations for wireless communication by a transmitter, according to aspects of this disclosure. FIG. 6 illustrates an example of sequence hypothesis grouping, according to aspects of the disclosure. FIG. 6 shows an exemplary structure for a short PUCCH. FIG. 7 illustrates an exemplary difference between a short PUCCH structure and a short PUSCH structure. FIG. 6 illustrates example operations for wireless communication by a UE in accordance with aspects of the present disclosure. FIG. 6 illustrates an exemplary structure for a one symbol short PUCCH or short PUSCH according to aspects of the disclosure. FIG. 6 illustrates an exemplary structure for a one symbol short PUCCH or short PUSCH according to aspects of the disclosure. FIG. 6 illustrates an exemplary structure for a 2-symbol short PUCCH or short PUSCH according to aspects of this disclosure. FIG. 6 illustrates an exemplary structure for a 2-symbol short PUCCH or short PUSCH according to aspects of this disclosure. FIG. 6 illustrates an exemplary structure for communicating a sounding reference signal (SRS) according to aspects of the disclosure.

For ease of understanding, wherever possible, the same reference numbers are used to indicate the same elements that are common to the figures. It is contemplated that the elements disclosed in one aspect may be used to advantage in other aspects without specific recitation.

Aspects of the disclosure provide apparatus, methods, processing systems, and computer-readable media for New Radio (NR) (New Radio Access Technology or 5G Technology).

NR is a wide bandwidth (e.g., above 80MHz) of enhanced mobile broadband (eMBB) targets, a high carrier frequency (e.g., 60GHz) of millimeter wave (mmW) targets, and a massive MTC (mMTC: Various wireless communication services may be supported, such as backwards incompatible MTC techniques for massive MTC (target) targets and/or ultra reliable low latency communication (URLLC) for mission-critical targets. These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTI) to meet their respective quality of service (QoS) requirements. In addition, these services can coexist in the same subframe.

The following description provides examples, and is not limiting of the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of the elements described without departing from the scope of this disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Also, features described with respect to some examples may be combined in some other examples. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. In addition, the scope of the present disclosure may be practiced using other structures, features, or structures and features in addition to or in addition to the various aspects of the disclosure described herein. It is intended to include such devices or methods. It should be understood that any aspect of the disclosure disclosed herein can be embodied by one or more elements of the claims. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects.

The techniques described herein may be used for various wireless communication networks such as LTE, CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and other networks. The terms "network" and "system" are often used interchangeably. CDMA networks may implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000. UTRA includes Wideband CDMA (WCDMA®), and other variants of CDMA. cdma2000 covers the IS-2000, IS-95, and IS-856 standards. The TDMA network may implement a wireless technology such as Global System for Mobile Communications (GSM®). OFDMA networks include NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, etc. Wireless technologies may be implemented. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). NR is a newly emerging wireless communication technology under development with the 5G Technology Forum (5GTF). 3GPP Long Term Evolution (LTE) and LTE Advanced (LTE-A) are UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM® are described in documents from an organization named “3rd Generation Partnership Project” (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). “LTE” generally refers to LTE, LTE Advanced (LTE-A), LTE in the unlicensed spectrum (LTE white space), and the like. The techniques described herein may be used for the wireless networks and radio technologies mentioned above, as well as other wireless networks and radio technologies. For clarity, aspects may be described herein using terms generally associated with 3G and/or 4G wireless technologies, although aspects of the disclosure include NR technologies, including 5G and beyond. Can be applied in other generation-based communication systems such as

Exemplary Wireless Communication System FIG. 1 illustrates an exemplary wireless network 100, such as a New Radio (NR) or 5G network, in which aspects of the present disclosure may be implemented.

As shown in FIG. 1, wireless network 100 may include some BSs 110 and other network entities. The BS may be a station that communicates with the UE. Each BS 110 may provide communication coverage for a particular geographical area. In 3GPP, the term "cell" may refer to the coverage area of a Node B and/or Node B subsystem serving this coverage area depending on the context in which the term is used. In an NR system, terms such as "cell" and eNB, Node B, 5G NB, AP, NR BS, gNB, or TRP may be interchangeable. In some examples, the cell may not necessarily be stationary and the geographical area of the cell may move according to the location of the mobile base station. In some examples, base stations may use any suitable transport network to communicate with each other within wireless network 100, and/or through various types of backhaul interfaces, such as direct physical connections, virtual networks, and/or It may be interconnected to one or more other base stations or network nodes (not shown).

In general, any number of wireless networks may be deployed in a given geographical area. Each wireless network may support a particular Radio Access Technology (RAT) and may operate on one or more frequencies. RAT is also called wireless technology, air interface, etc. Frequencies are sometimes referred to as carriers, frequency channels, and so on. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR RAT networks or 5G RAT networks may be deployed.

The BS may provide communication coverage for macro cells, pico cells, femto cells, and/or other types of cells. A macro cell may cover a relatively large geographical area (eg, a few kilometers in radius) and may allow unlimited access by UEs subscribing to the service. A pico cell may cover a relatively small geographical area and may allow unlimited access by UEs subscribing to the service. Femtocells can cover a relatively small geographical area (e.g., home) and UEs that have an association with a femtocell (e.g., UEs in a limited subscriber group (CSG), for users in home). Restricted access by the UE, etc.) may be enabled. The BS for a macro cell is sometimes called a macro BS. The BS for a pico cell is sometimes called a pico BS. The BS for a femto cell is sometimes called a femto BS or home BS. In the example shown in FIG. 1, BSs 110a, 110b and 110c may be macro BSs for macro cells 102a, 102b and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. The BS may support one or more (eg, 3) cells.

The wireless network 100 may also include relay stations. A relay station is a station that receives transmissions of data and/or other information from upstream stations (e.g. BS or UE) and sends transmissions of data and/or other information to downstream stations (e.g. UE or BS). Is. The relay station may also be a UE that relays transmissions for other UEs. In the example shown in FIG. 1, the relay station 110r can communicate with the BS 110a and the UE 120r in order to facilitate the communication between the BS 110a and the UE 120r. A relay station may also be called a relay BS, a relay, etc.

The wireless network 100 can be a heterogeneous network including different types of BSs, eg, macro BSs, pico BSs, femto BSs, relays, and so on. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs may have high transmit power levels (eg, 20 Watts), while pico BSs, femto BSs, and relays may have lower transmit power levels (eg, 1 Watt).

Wireless network 100 may support synchronous or asynchronous operation. For synchronous operation, BSs can have similar frame timings and transmissions from different BSs can be approximately time aligned. For asynchronous operation, BSs may have different frame timings and transmissions from different BSs may not be time aligned. The techniques described herein may be used for both synchronous and asynchronous operation.

The network controller 130 may be coupled to the set of BSs and provide coordination and control for these BSs. The network controller 130 may communicate with the BS 110 via the backhaul. BSs 110 may also communicate with each other, eg, directly or indirectly via a wireless or wired backhaul.

UEs 120 (eg, 120x, 120y, etc.) may be dispersed throughout wireless network 100, and each UE may be stationary or mobile. UE is a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE: Customer Premises Equipment), cellular phone, smartphone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, Laptop computers, cordless phones, wireless local loop (WLL) stations, tablets, cameras, gaming devices, netbooks, smartbooks, ultrabooks, medical devices or devices, healthcare devices, biosensors/devices, smartwatches, smart Wearable devices such as clothing, smart glasses, virtual reality goggles, smart wristbands, smart jewelry (e.g. smart rings, smart bracelets, etc.), entertainment devices (e.g. music devices, video devices, satellite radio etc.), vehicle components or vehicles. Sensors, smart meters/sensors, robots, drones, industrial production equipment, positioning devices (eg GPS, Beidou, terrestrial), or any other configured to communicate via wireless or wired media. Sometimes referred to as the appropriate device. Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices, where an MTC device or eMTC device communicates with a base station, another remote device, or some other entity. Can include a remote device that can Machine Type Communication (MTC) may refer to communication involving at least one remote device on at least one end of the communication, and data communication involving one or more entities that do not necessarily require human interaction. May be included. MTC UEs may include, for example, UEs capable of MTC communication with MTC servers and/or other MTC devices through Public Land Mobile Networks (PLMN). MTC UEs and eMTC UEs can communicate with a BS, another device (e.g., remote device), or some other entity, e.g., robot, drone, remote device, sensor, meter, monitor, camera, location tag. Including etc. A wireless node may provide connectivity for or to a network (eg, a wide area network such as the Internet or a cellular network) via, for example, a wired or wireless communication link. MTC UEs as well as other UEs may be implemented as Internet of Things (IoT) devices, eg, narrowband IoT (NB-IoT) devices.

In FIG. 1, the solid line with double-headed arrow indicates the desired transmission between the UE and the serving BS, where the serving BS is the BS designated to serve the UE on the downlink and/or uplink. .. The dashed line with double-headed arrow indicates the interfering transmission between the UE and the BS.

Certain wireless networks (eg, LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, also commonly referred to as tones, bins, and so on. Each subcarrier may be modulated with data. In general, modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers may be fixed and the total number of subcarriers (K) may depend on the system bandwidth. For example, the subcarrier spacing may be 15 kHz and the minimum resource allocation (referred to as a “resource block”) may be 12 subcarriers (or 180 kHz). As a result, the nominal FFT size can be equal to 128, 256, 512, 1024 or 2048, respectively, for a system bandwidth of 1.25, 2.5, 5, 10 or 20 megahertz (MHz). The system bandwidth can also be partitioned into subbands. For example, a subband can cover 1.08 MHz (e.g., 6 resource blocks), for system bandwidths of 1.25, 2.5, 5, 10 or 20 MHz, 1, 2, 4, 8 respectively. Or there may be 16 subbands.

Although the example aspects described herein may be associated with LTE technology, aspects of the disclosure may be applicable to other wireless communication systems, such as NR. NR utilizes OFDM with CP on the uplink and downlink and may include support for half-duplex operation using Time Division Duplex (TDD). A single component carrier bandwidth of 100MHz may be supported. The NR resource block may span 12 subcarriers with a subcarrier bandwidth of 75 kHz for a duration of 0.1 ms. Each radio frame may be composed of 50 subframes having a length of 10 ms. As a result, each subframe can have a length of 0.2 ms. Each subframe may indicate a link direction for data transmission (eg DL or UL), and the link direction for each subframe may be dynamically switched. Each subframe may include DL/UL data as well as DL/UL control data. The UL and DL subframes for NR may be as described in more detail below with respect to FIGS. 6 and 7. Beamforming may be supported and the beam direction may be dynamically configured. MIMO transmission with precoding may also be supported. The MIMO configuration in DL may support up to 8 transmit antennas in a multi-layer DL transmission with up to 8 streams and up to 2 streams per UE. Multi-layer transmission with up to two streams per UE may be supported. Aggregation of multiple cells may be supported using up to 8 serving cells. Alternatively, the NR may support different non-OFDM based air interfaces. The NR network may include entities such as CU and/or DU.

In some examples, access to the air interface may be scheduled and the scheduling entity (e.g., base station) may be responsible for communication between some or all devices and equipment within its coverage area or cell. Allocate resources. Within the present disclosure, a scheduling entity may be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more dependent entities, as described further below. That is, for scheduled communications, the subordinate entity utilizes the resources allocated by the scheduling entity. The base station is not the only entity that can function as a scheduling entity. That is, in some examples, a UE may act as a scheduling entity that schedules resources for one or more dependent entities (eg, one or more other UEs). In this example, the UE is acting as a scheduling entity and the other UEs utilize the resources scheduled by the UE for wireless communication. A UE may function as a scheduling entity in peer-to-peer (P2P) networks and/or mesh networks. In the example mesh network, the UEs, in addition to communicating with the scheduling entity, may in some cases be in direct communication with each other.

Therefore, in a wireless communication network with scheduled access to time-frequency resources and having cellular, P2P, and mesh configurations, the scheduling entity and one or more subordinate entities utilize the scheduled resources. Can communicate.

As mentioned above, the RAN may include CU and DU. An NR BS (eg, eNB, 5G Node B, Node B, Transmit/Receive Point (TRP), Access Point (AP)) may correspond to one or more BSs. The NR cell may be configured as an access cell (ACell) or a data only cell (DCell). For example, a RAN (eg, aggregation unit or distributed unit) may make up a cell. A DCell may be a cell used for carrier aggregation or dual connectivity but not used for initial access, cell selection/reselection, or handover. In some cases, the DCell may not send the synchronization signal, and in some cases, the DCell may send the SS. The NR BS may send a downlink signal indicating the cell type to the UE. Based on the cell type indication, the UE may communicate with the NR BS. For example, the UE may determine the NRBS to consider for cell selection, access, handover, and/or measurement based on the indicated cell type.

FIG. 2 shows an exemplary logical architecture of a distributed radio access network (RAN) 200 that may be implemented within the wireless communication system shown in FIG. The 5G access node 206 may include an access node controller (ANC) 202. The ANC may be a centralized unit (CU) of the distributed RAN 200. The backhaul interface to the next generation core network (NG-CN) 204 may terminate at the ANC. The backhaul interface to the Neighbor Next Generation Access Node (NG-AN) may be terminated at the ANC. The ANC may include one or more TRPs 208 (sometimes referred to as BS, NR BS, Node B, 5G NB, AP, gNB, or some other term). As explained above, TRP may be used interchangeably with "cell".

The TRP 208 may be a DU. The TRP may be connected to one ANC (ANC202) or may be connected to more than one ANC (not shown). For example, for RAN sharing, radio as a service (RaaS), and service-specific ANC deployment, the TRP may be connected to more than one ANC. The TRP may include one or more antenna ports. TRP may be configured to service traffic to UEs individually (eg, dynamic selection) or together (eg, joint transmission).

Local architecture 200 may be used to show fronthaul definitions. An architecture can be defined that supports fronthauling solutions across different deployment types. For example, the architecture may be based on transmit network capabilities (eg, bandwidth, latency, and/or jitter).

The architecture may share features and/or components with LTE. According to an aspect, the next generation AN (NG-AN) 210 may support dual connectivity with NR. NG-AN may share a common fronthaul for LTE and NR.

The architecture may allow collaboration between TRPs 208. For example, collaborations may be preset within the TRP and/or across the TRP via the ANC 202. According to an aspect, inter-TRP interfaces may not be required/existent.

According to an aspect, there may be a dynamic configuration of partitioned logical functions within architecture 200. As described in more detail with reference to FIG. 5, a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a medium access control (MAC) layer, and a physical ( The PHY) layer may be adaptively located in the DU or CU (eg, TRP or ANC, respectively). According to some embodiments, the BS may include an aggregation unit (CU) (eg, ANC202) and/or one or more distribution units (eg, one or more TRP208).

FIG. 3 illustrates an exemplary physical architecture of distributed RAN 300, according to some aspects of the present disclosure. Centralized Core Network Unit (C-CU) 302 may host the core network functions. The C-CU may be centrally located. C-CU functionality may be offloaded (eg, to Advanced Wireless Services (AWS)) in an attempt to address peak capacity.

A centralized RAN unit (C-RU) 304 may host one or more ANC functions. In some cases, the C-RU may locally host core network functions. C-RUs may have a distributed arrangement. The C-RU may be closer to the network edge.

The DU 306 may host one or more TRPs (edge node (EN), edge unit (EU), radio head (RH), smart radio head (SRH), etc.). The DU may be located at the edge of the network with radio frequency (RF) capabilities.

FIG. 4 illustrates exemplary components of BS 110 and UE 120 shown in FIG. 1 that may be used to implement aspects of the present disclosure. As explained above, the BS may include TRP. One or more components of BS 110 and UE 120 may be used to practice aspects of this disclosure. For example, the antenna 452, processor 466, 458, 464, and/or controller/processor 480 of UE 120 and/or antenna 434, processor 430, 420, 438, and/or controller/processor 440 of BS 110 are referred to herein. It may be used to perform the operations described and illustrated with reference to FIGS. 10 and 11.

FIG. 4 shows a block diagram of a design of BS 110 and UE 120, which may be one of the BSs and one of the UEs in FIG. For the restricted connection scenario, base station 110 may be macro BS 110c of FIG. 1 and UE 120 may be UE 120y. Base station 110 may also be some other type of base station. The base station 110 can be equipped with antennas 434a-434t and the UE 120 can be equipped with antennas 452a-452r.

At base station 110, transmit processor 420 may receive data from data source 412 and control information from controller/processor 440. The control information may relate to a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), etc. The data may be for a physical downlink shared channel (PDSCH), etc. Processor 420 can process (eg, encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. Processor 420 may also generate reference symbols for PSS, SSS, and cell-specific reference signals, for example. A transmit (TX) multiple input multiple output (MIMO) processor 430 may perform spatial processing (e.g., precoding) on data symbols, control symbols, and/or reference symbols, where applicable. , The output symbol stream can be provided to modulators (MODs) 432a-432t. For example, TX MIMO processor 430 may perform some aspects described herein for RS multiplexing. Each modulator 432 may process a respective output symbol stream (eg, for OFDM, etc.) to obtain an output sample stream. Each modulator 432 may further process (eg, convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. Downlink signals from modulators 432a-432t may be transmitted via antennas 434a-434t, respectively.

At UE 120, antennas 452a-452r can receive downlink signals from base station 110 and can provide the received signals to demodulators (DEMODs) 454a-454r, respectively. Each demodulator 454 may condition (eg, filter, amplify, downconvert, and digitize) its respective received signal to obtain input samples. Each demodulator 454 may further process the input samples (eg, for OFDM, etc.) to obtain received symbols. MIMO detector 456 may obtain received symbols from all demodulators 454a-454r, perform MIMO detection on the received symbols, if applicable, and provide the detected symbols. For example, MIMO detector 456 may provide the detected RS transmitted using the techniques described herein. Receive processor 458 processes (e.g., demodulates, deinterleaves, and decodes) the detected symbols, provides decoded data for UE 120 to data sink 460, and provides decoded control information to controller/processor 480. Can be provided to. According to one or more cases, CoMP aspects can include providing antennas as well as some Tx/Rx functions such that the CoMP aspects reside in distributed units. For example, some Tx/Rx processing may occur in a central unit, while other processing may occur in distributed units. For example, in accordance with one or more aspects illustrated, BS modulator/demodulator 432 may be in distributed units.

In the uplink, at UE 120, a transmit processor 464 sends data from a data source 462 (eg, for a physical uplink shared channel (PUSCH)) and controller/processor 480 (eg, a physical uplink control channel (PUCCH)). Control information (for) may be received and processed. Transmit processor 464 may also generate reference symbols for the reference signal. The symbols from transmit processor 464 are precoded, if applicable, by TX MIMO processor 466, further processed by demodulators 454a-454r (e.g., for SC-FDM, etc.), and transmitted to base station 110. You may At BS 110, the uplink signal from UE 120 is received by antenna 434, processed by modulator 432, detected by MIMO detector 436, where applicable, and further processed by receive processor 438, by UE 120. The decoded data and control information sent can be obtained. Receive processor 438 may provide the decoded data to data sink 439 and the decoded control information to controller/processor 440.

Controllers/processors 440 and 480 may direct the operation at base station 110 and UE 120, respectively. Processor 440 and/or other processors and modules at base station 110 may perform or direct processes for the techniques described herein. Processor 480 and/or other processors and modules at UE 120 may also perform or direct processes for the techniques described herein. Memories 442 and 482 may store data and program codes for BS 110 and UE 120, respectively. The scheduler 444 may schedule the UE for data transmission on the downlink and/or the uplink.

FIG. 5 shows a diagram 500 illustrating an example for implementing a communication protocol stack, according to aspects of the disclosure. The depicted communication protocol stacks may be implemented by devices operating in 5G systems (eg, systems that support uplink-based mobility). The diagram 500 includes a radio resource control (RRC) layer 510, a packet data convergence protocol (PDCP) layer 515, a radio link control (RLC) layer 520, a medium access control (MAC) layer 525, and a physical (PHY) layer 530. Indicates a communication protocol stack. In various examples, the layers of the protocol stack may be implemented as discrete modules of software, parts of a processor or ASIC, parts of non-colocated devices connected by communication links, or various combinations thereof. Colocated and non-collocated implementations may be used, for example, in a protocol stack for a network access device (eg, AN, CU, and/or DU) or UE.

The first option 505-a is a protocol stack implementation where the protocol stack implementation is split between a centralized network access device (eg, ANC202 in FIG. 2) and a distributed network access device (eg, DU208 in FIG. 2). The division mounting form is shown. In the first option 505-a, the RRC layer 510 and the PDCP layer 515 may be implemented by the aggregation unit and the RLC layer 520, the MAC layer 525, and the PHY layer 530 may be implemented by the DU. In various examples, CU and DU may or may not be co-located. The first option 505-a may be useful in a macro cell arrangement, a micro cell arrangement, or a pico cell arrangement.

The second option 505-b is that the protocol stack has a single network access device (e.g., access node (AN), new radio base station (NB BS), new radio node B (NR NB), network node (NN)). Etc.), the integrated implementation form of the protocol stack is shown. In the second option, RRC layer 510, PDCP layer 515, RLC layer 520, MAC layer 525, and PHY layer 530 may each be implemented by an AN. The second option 505-b may be useful in femtocell deployments.

Regardless of whether the network access device implements some or all of the protocol stacks, the UE uses the entire protocol stack (e.g., RRC layer 510, PDCP layer 515, RLC layer 520, MAC layer 525, and PHY layer). 530) may be implemented.

FIG. 6 is a diagram 600 showing an example of a DL-centered subframe. The DL-centric subframe may include the control portion 602. The control portion 602 may be in the first portion or the start portion of the DL-centric subframe. The control portion 602 may include various scheduling and/or control information corresponding to various portions of DL-centric subframes. In some configurations, the control portion 602 may be a physical DL control channel (PDCCH), as shown in FIG. The DL-centric subframe may also include a DL data portion 604. The DL data portion 604 may sometimes be referred to as the DL-centric subframe payload. DL data portion 604 may include communication resources utilized to communicate DL data from a scheduling entity (eg, UE or BS) to a subordinate entity (eg, UE). In some configurations, the DL data portion 604 may be a physical DL shared channel (PDSCH).

The DL-centric subframe may also include a common UL portion 606. Common UL portion 606 may sometimes be referred to as UL burst, common UL burst, and/or various other suitable terms. The common UL portion 606 may include feedback information corresponding to various other portions of the DL-centric subframe. For example, common UL portion 606 may include feedback information corresponding to control portion 602. Non-limiting examples of feedback information may include ACK signals, NACK signals, HARQ indicators, and/or various other suitable types of information. The common UL portion 606 may include additional or alternative information such as random access channel (RACH) procedures, information regarding scheduling requests (SR), and various other suitable types of information. As shown in FIG. 6, the end of DL data portion 604 may be temporally separated from the beginning of common UL portion 606. This time separation may sometimes be referred to as a gap, guard period, guard interval, and/or various other suitable terms. This separation provides time for switching from DL communication (eg, receive operation by a subordinate entity (eg, UE)) to UL communication (eg, transmission by a subordinate entity (eg, UE)). Those skilled in the art will appreciate that the above is only one example of DL-centric subframes, and that alternative structures with similar features may exist, without necessarily departing from the aspects described herein.

FIG. 7 is a diagram 700 showing an example of a UL-centered subframe. The UL-centric subframe may include the control portion 702. The control portion 702 may be in the first portion or the start portion of the UL-centric subframe. The control portion 702 in FIG. 7 may be similar to the control portion described above with reference to FIG. The UL-centric subframe may also include UL data portion 704. UL data portion 704 may sometimes be referred to as the UL-centric subframe payload. The UL portion may refer to communication resources utilized to communicate UL data from a dependent entity (eg, UE) to a scheduling entity (eg, UE or BS). In some configurations, control portion 702 may be a physical DL control channel (PDCCH).

As shown in FIG. 7, the end of control portion 702 may be temporally separated from the beginning of UL data portion 704. This time separation may sometimes be referred to as a gap, guard period, guard interval, and/or various other suitable terms. This separation provides time for switching from DL communication (eg, receive operation by the scheduling entity) to UL communication (eg, transmission by the scheduling entity). The UL-centric subframe may also include a common UL portion 706. The common UL portion 706 in FIG. 7 may be similar to the common UL portion 606 described above with reference to FIG. Common UL portion 706 may additionally or alternatively include channel quality indicator (CQI), information about sounding reference signal (SRS), and various other suitable types of information. Those skilled in the art will appreciate that the above is only one example of a UL-centric subframe, and that alternative structures with similar features may exist without necessarily departing from the aspects described herein.

In some situations, two or more dependent entities (eg, UEs) can communicate with each other using sidelink signals. Examples of real-world applications of such side-link communications are public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, missions. It may include a critical mesh, and/or various other suitable applications. In general, the sidelink signal may be used by a scheduling entity (e.g., UE or BS) without relaying its communication even though the scheduling entity may be utilized for scheduling and/or control. It may refer to a signal communicated from (UE1) to another dependent entity (eg, UE2). In some examples, sidelink signals may be communicated using the unlicensed spectrum (unlike wireless local area networks, which typically use the unlicensed spectrum).

UE is a configuration related to sending pilots using a dedicated set of resources (eg, Radio Resource Control (RRC) dedicated state, etc.) or related to sending pilots using a common set of resources. May operate in a variety of radio resource configurations, including configured configurations (eg, RRC common state, etc.). When operating in the RRC dedicated state, the UE may select a dedicated set of resources to send pilot signals to the network. When operating in the RRC common state, the UE may select a common set of resources to send pilot signals to the network. In any case, the pilot signals transmitted by the UE may be received by one or more network access devices, such as AN or DU, or portions thereof. Each receiving network access device receives and measures pilot signals transmitted on a common set of resources, and the resources of resources allocated to the UE for which the network access device is a member of the network access device's monitored set for the UE. Pilot signals transmitted on the dedicated set may also be configured to receive and measure. One or more of the receiving network access devices, or the CU to which the receiving network access device sends the measurements of the pilot signal, to identify the serving cell for the UE, or one or more of the UEs. The measurements may be used to initiate a serving cell change for

Exemplary Short Burst Channel Designs and Multiplexing Aspects of the present disclosure provide various designs for short burst channels (eg, PUCCH and PUSCH) that enable multiplexing of various signals.

8 and 9 show exemplary uplink and downlink structures including regions for short uplink burst transmissions, respectively. UL short bursts may send information that may be conveyed in relatively few bits, such as acknowledgment (ACK) information, channel quality indicator (CQI), or scheduling request (SR) information. Short data such as TCP ACK information as well as reference signals such as Sounding Reference Signal (SRS) may also be conveyed. UL short bursts may have one or more OFDM symbols.

In some cases, such information may be conveyed using a shifted sequence transmitted on tones within the UL short burst region. Such a shifted sequence may be designed to make the shifted sequence suitable for such applications and to have some properties that may be used for common pilot tones.

FIGS. 10 and 11 respectively illustrate exemplary shifted sequences that may be used to convey one or two bits of information (e.g., each sequence corresponds to a shifted version of the base sequence). Show. As shown, for a 1-bit ACK, a cyclic shift of L/2 in the time domain can result in sign substitution inversion in the frequency domain, where L is the sequence length. Similarly, for a 2-bit ACK, the four hypotheses with a minimum shift distance of L/4 for every four tones can be used as DMRS tones. The base sequence can be a computer-generated sequence (CGS) sequence, a Chu sequence, or another type of sequence with a low peak-to-average power ratio (PAPR).

In accordance with aspects of this disclosure, the properties of shifted sequences can be exploited to enable enhanced receiver techniques. For sequence hypotheses with common tones (zero or more) with the same (known) value, these tones are actually used as additional DMRS tones to enhance the channel estimation. obtain. Receivers implementing such techniques may be considered to be hybrid coherent/noncoherent receivers.

FIG. 12 illustrates example operations 1200 for wireless communication by a receiver, according to aspects of this disclosure implementing such receiver techniques.

Operation 1200 begins at 1202 by receiving a sequence transmitted within a plurality of tones of at least one short burst symbol, the sequence carrying at least one information bit. At 1204, the receiver determines one or more groups of sequence hypotheses having the same value in a first set of common tone locations for a demodulation reference signal (DMRS) and a second set of common tone locations for DMRS. Identify each sequence hypothesis in one group with. At 1206, the receiver performs channel and noise interference estimation for each group based on the tone location for DMRS in the group and uses the channel and noise interference estimation for each group to determine the corresponding sequence hypothesis in that group. evaluate. At 1208, the receiver determines the received sequence and the transmitted information bits based on the estimate.

FIG. 12A illustrates an exemplary operation 1200A for wireless communication by a transmitter, according to aspects of this disclosure that implements such a receiver technique.

Act 1200A has at 1202A one or more groups of sequences that have the same value in a first set of common tone locations for a demodulation reference signal (DMRS) and a second set of common tone locations for DMRS. Start by identifying each sequence in the group. At 1204A, a transmitter transmits a sequence from a group of sequences within a plurality of tones of at least one short burst symbol to convey at least one information bit. The second set has more common tone locations than the first set. In some examples, the first set does not include common tone locations.

FIG. 13 illustrates an example of sequence hypothesis grouping according to aspects of this disclosure. In that example, four hypotheses are grouped into two groups (based on common tones having the same value as indicated by the circled values).

Tones within one grouping may be used to enhance the 1/4 DMRS ratio, but this is not sufficient in some cases (eg, for large delay despreading). By dividing the hypothesis into groups, each group may have a higher DMRS ratio. As in the illustrated example, for a 2-bit ACK, the four hypotheses can be divided into two groups, each with a 1/2 DMRS ratio. As shown, sequence 1 and sequence 2 are in the first group, while sequence 3 and sequence 4 are in the second group. For each group g, the receiver may perform channel/noise interference estimation based on 1/2 DMRS ratio (h^g_i, i=1...numtones), and (after estimation) all data tones Can perform coherent combining over (s^j=sum(r_i*conj(h^g_i)*conj(seq_j_i)),i=2,4...numtones,j=1,2 for g=1;and3 , 4 g=2). The receiver may estimate the equivalent noise interference variance v^j in the combined metric s^j. The receiver has a hypothesis (i_detect) with the maximum combined (performance) metric generated as s^max=max(s^1,s^2,s^3,s^4) and the corresponding noise interference variance v^i_detect. ) Can be found. If the corresponding s^max is less than threshold*sqrt(v^i_detect), then the detection is not declared (DTX), otherwise the receiver sends the transmitted sequence i_detect and the corresponding transmitted bits. You can declare a detection. In other words, in some cases, a sequence may only be selected if the corresponding equivalent noise interference variance is less than the threshold.

FIG. 14 shows an exemplary structure for a short PUCCH. For short PUCCH of 1 symbol, at least 3 bits and more, frequency division multiplexing (FDM) of DMRS and data tones may be supported. A resource block (RB) may be contiguous (single cluster) or distant clusters (multi-cluster), e.g. having a suitable DMRS ratio (e.g. 1/3). You can For a short PUCCH with 2 symbols, 1-bit or 2-bit iterations of a 1-symbol design may be supported with frequency and sequence hopping.

FIG. 15 shows an exemplary difference between a short PUCCH structure and a short PUSCH structure. As shown, the short PUSCH may have larger payload and higher modulation scheme, different coding choices, and DMRS ratio. For 1-symbol CP-OFDM, there may be a lower DMRS ratio (eg, DMRS), LDPC coded up to 256QAM. In this case, RBs may be continuous or separated.

Aspects of the disclosure provide various structures for multiplexing signals in short uplink bursts.

FIG. 16 illustrates example operations 1600 for wireless communication by a UE in accordance with aspects of the present disclosure having the structure provided herein.

Operation 1600 determines 1602 resources within a set of resource blocks (RB) allocated for at least one of a short physical uplink control channel (PUCCH) or a short physical uplink shared channel (PUSCH). Start by doing. At 1604, the UE determines a pattern for multiplexing a short PUCCH or PUSCH with at least one type of reference signal (RS). At 1606, the UE transmits a short PUCCH or short PUSCH on the determined resource multiplexed with the RS according to the pattern.

17 and 18 illustrate example structures for a one symbol short PUCCH or short PUSCH that enables multiplexing with other channels, according to aspects of this disclosure. As shown, the allocated RBs can be either contiguous or distant. The DMRS pattern design may be separated for each cluster and/or joint coding may be performed across multiple clusters (using rate matching). In some cases, for a 2-symbol short PUCCH (or PUSCH), the same DMRS pattern may be used for each of the symbols.

In some cases, the allocated resources may correspond to a subset of combs. According to one option, the DMRS pattern design may be separated for each allocated comb. For example, each comb may use the ratio of its tones (eg, ratio=x) to DMRS (eg, x=1/3).

According to another option, DMRS tones may be jointly optimized for combined allocation. As an example, if the DMRS gets one of a total of 2 or 4 combs, the ratio of the x's of the combs may be used for the DMRS (e.g., x=1/2 or 1/3). .. For example, for x=1/2, the DMRS can get 2 out of a total of 4 combs, or 1 out of a total of 2 combs. An alternative is to use the ratio of a single comb to get another effective ratio (e.g. some ratio), or it may decide to use one comb depending on the ratio ..

In some cases, the short PUCCH/PUSCH from one UE may be sent on the same RB with the SRS from another UE. For example, the other UE may have a different comb (eg, allowing simultaneous transmission of the short PUCCH/PUSCH plus SRS from the same UE, as described below).

19 and 20 illustrate example structures for a two-symbol short PUCCH or short PUSCH, according to aspects of this disclosure. Such a 2-symbol design for a single channel may be applied to both short PUCCH or short PUSCH with 3 bits or more. As shown in FIGS. 19 and 20, the two symbols may have the same RB allocation, different RB allocations, or partially overlapping RB allocations (e.g., transmitted separately). In some cases, the DMRS tones may be smaller than the combined DMRS tones of the two symbols, at least partially overlapping allocations).

For designs with different RBs, a one symbol design (such as DMRS) may be repeated in both symbols. Designs with the same or partially overlapping RBs may allow DMRS sharing (eg, with DMRS tones used for channel estimation in both symbols). In some cases, estimating involves estimating the equivalent noise interference variance for each hypothesis. The total number of DMRS tones used in a 2-symbol transmission may be less than the sum of DMRS tones used in each symbol when transmitted separately. In some cases, the DMRS may be sent on only one symbol, or the DMRS may be sent on both symbols, offset in frequency.

In some cases, joint coding may be applied across the two symbols for the same payload to enhance coding gain.

In some cases, resources may be allocated to allow multiplexing with other channels (eg, SRS). The resources allocated for any symbol may be a subset of combs or may be RBs that are separated. An option may follow the one-symbol design rule for that symbol. Another option is to try and rely on the other symbol. For example, in the case of the same RB as the other symbol or a partially overlapping RB with full RB allocation, the design should try and place DMRS tones on the other symbol for the overlapping part, if possible. Good (if not possible, follow 1-symbol design rules).

The designs presented herein may allow simultaneous transmission of multiple channels (eg, of the same UE). For example, SR/ACK and CQI may be sent together. According to one option, the 1-bit or 2-bit SR/ACK may be modulated on the CQI DMRS tones. According to another option, the SR/ACK bit and the CQI bit may be jointly coded and sent following a short PUCCH with 3 or more bits. According to yet another option, the SR/ACK and CQI channels may be coded separately and transmitted following each individual channel structure. In some examples, the two independently coded channels may use adjacent RBs to reduce PAPR and intermodal leakage.

In some cases, the short PUSCH and short PUCCH may be sent together. According to one option, the short PUCCH and short PUSCH may be separately coded and transmitted (eg, using PAPR and adjacent RBs again to reduce inter-mode leakage). According to another option, the short PUCCH and PUSCH may be jointly coded and jointly transmitted. In such cases, the eNB may need to perform blind detection as to whether the ACK is a DTX (eg, if it is a DTX, there is no ACK bit included in the payload).

In some cases, SRS may be multiplexed with short PUCCH and PUSCH. However, SRS and short PUCCH/PUSCH may have large power spectral density (PSD) differences. It may be acceptable to transmit both SRS and short PUCCH/PUSCH together if they are on different RBs. If on the same RB (or partially overlapping RBs) but with different combs, the UE cannot send SRS and short PUCCH/PUSCH with large PSD difference. In such cases, one option is to drop either the SRS or the short PUCCH/PUSCH depending on the priority scheme. In one exemplary priority scheme, the SRS may be withdrawn if the short PUCCH or PUSCH has higher priority. In another example priority scheme, the short PUCCH or short PUSCH may be withdrawn if the SRS has a higher priority. Another option is to change the SRS to a subband SRS on a different RB. In such cases, the eNB may need to send explicit scheduling of the aperiodic SRS to override the periodic SRS transmission.

FIG. 21 illustrates an exemplary structure for communicating a sounding reference signal (SRS), according to aspects of this disclosure. As shown, this structure can be either comb-based or subband-based. Subband-based SRS may have a smaller sounding bandwidth. Comb-based SRS may have a larger sounding bandwidth (eg, may be wide enough to occupy the entire system bandwidth).

The methods disclosed herein include one or more steps or actions for implementing the described method. Method steps and/or actions may be interchanged with one another without departing from the scope of the claims. In other words, unless a particular order of steps or actions is specified, the order and/or use of particular steps and/or actions may be modified without departing from the scope of the claims.

As used herein, the phrase referring to “at least one of” a list of items refers to any combination of those items that includes a single member. By way of example, "at least one of a, b, or c" means a, b, c, ab, ac, bc, and abc, and any combination having more than one of the same elements (e.g., aa, aaa. , Aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other order of a, b, and c). The term "and/or" as used herein, including in the claims, when used in the recitation of two or more items, is taken as any one of the listed items being taken alone. Or that any combination of two or more of the listed items can be employed. For example, if the composition is described as comprising components A, B, and/or C, then the composition is A only, B only, C only, A and B combination, A and C combination. , B and C, or A, B and C.

The term "determining" as used herein encompasses a wide variety of actions. For example, "determining" means calculating, calculating, processing, deriving, exploring, looking up (eg, looking up in a table, database, or another data structure). , Confirmation, etc. may be included. Also, “determining” can include receiving (eg, receiving information), accessing (eg, accessing data in memory), and the like. Also, "determining" can include resolving, selecting, choosing, establishing and the like.

The foregoing description is provided to enable any person skilled in the art to practice the various aspects set forth herein. Various modifications of these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims should not be limited to the embodiments set forth herein, but should be given the full range of claims consistent with the wording of the claims, and references to elements in the singular are like that. Unless otherwise specified, it shall mean "one or more" rather than "one and only." For example, the articles "a" and "an" as used in the present application and the appended claims generally refer to "a" and "an" unless the context clearly dictates otherwise. It should be construed as meaning "one or more." Unless otherwise specified, the term "some" refers to one or more. Furthermore, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless specified otherwise, or clear from context, for example, the phrase “X employs A or B” is intended to mean any inclusive substitution. That is, for example, the phrase "X adopts A or B" is satisfied by any of the following examples. X adopts A, X adopts B, or X adopts both A and B. All structural and functional equivalents to elements of various aspects described throughout this disclosure that are known to, or will be known to, those of ordinary skill in the art are expressly incorporated herein by reference. , Are intended to be covered by the claims. Moreover, the disclosures herein are not made publicly available, regardless of whether such disclosures are expressly set forth in the claims. Elements of the claims may be listed unless the elements are explicitly recited using the phrase "means for" or, in the case of method claims, the elements are recited using the phrase "steps for". Unless stated otherwise, it should not be construed in accordance with the provisions of Section 112, sixth paragraph, of the US Patents Act.

The various acts of the method described above may be performed by any suitable means capable of performing the corresponding function. The means may include various hardware and/or software components and/or modules including, but not limited to, circuits, application specific integrated circuits (ASICs), or processors. In general, where the operations shown in the figures are present, they may have correspondingly numbered corresponding counterparts, Mean Plus Function components.

Various exemplary logic blocks, modules, and circuits described in connection with this disclosure include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or others. Programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller or state machine. The processor may also be implemented as a combination of computing devices, eg, a DSP and microprocessor combination, multiple microprocessors, one or more microprocessors associated with a DSP core, or any other such configuration. May be.

If implemented in hardware, an exemplary hardware configuration may include a processing system within a wireless node. The processing system may be implemented using a bus architecture. The bus may include any number of interconnected buses and bridges depending on the particular application of the processing system and the overall design constraints. A bus may link various circuits together, including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter to the processing system via the bus, among other things. The network adapter may be used to implement PHY layer signal processing functions. For user terminal 120 (see FIG. 1), a user interface (eg, keypad, display, mouse, joystick, etc.) may be connected to the bus. The bus may link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., but these circuits are well known in the art, and therefore no more I won't explain. A processor may be implemented with one or more general purpose processors and/or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits capable of executing software. Those skilled in the art will recognize how to best implement the above functionality for a processing system depending on the particular application and the overall design constraints imposed on the overall system.

If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Software is broadly construed to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or any other name. Should be. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. The processor may be responsible for managing the bus and general processing, including the execution of software modules stored on the machine-readable storage medium. A computer-readable storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. By way of example, a machine-readable medium may include a transmission line, a carrier wave modulated by data, and/or a computer-readable storage medium on which instructions separate from a wireless node are stored, all of which are via a bus interface. It may be accessed by the processor. Alternatively or additionally, the machine-readable medium or any portion thereof may be integrated into the processor as well as the cache and/or general purpose register file. Examples of machine-readable storage media include RAM (random access memory), flash memory, phase change memory, ROM (read only memory), PROM (programmable read only memory), EPROM (erasable programmable read only memory), to name a few. ), EEPROM (Electrically Erasable Programmable Read Only Memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage medium, or any combination thereof. The machine-readable medium may be embodied in a computer program product.

A software module may include a single instruction or many instructions and may be distributed over several different code segments, among different programs, and across multiple storage media. The computer-readable medium may include a number of software modules. Software modules include instructions that, when executed by a device, such as a processor, cause a processing system to perform various functions. The software module may include a sending module and a receiving module. Each software module may reside within a single storage device or may be distributed across multiple storage devices. By way of example, the software module may be loaded into RAM from the hard drive when the trigger event occurs. During execution of the software module, the processor may load some of the instructions into cache to increase access speed. One or more cache lines may then be loaded into the general purpose register file for execution by the processor. When referring to the functionality of a software module below, it will be understood that such functionality is implemented by the processor when executing instructions from that software module.

Also, any connection is properly termed a computer-readable medium. For example, software uses coaxial cables, fiber optic cables, twisted pairs, digital subscriber lines (DSL), or wireless technologies such as infrared (IR), radio, and microwave to create websites, servers, or other remote When transmitted from a source, coaxial cables, fiber optic cables, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Discs and discs used herein are compact discs (CDs), laser discs (discs), optical discs (discs), digital versatile discs (discs) (DVDs), and floppy discs. (disk), and Blu-ray (registered trademark) disc (disc), the disc (disk) usually reproduces data magnetically, and the disc (disc) uses a laser to optically reproduce the data. Reproduce. Thus, in some aspects computer readable media may comprise non-transitory computer readable media (eg, tangible media). In addition, for other aspects computer-readable media may comprise transitory computer-readable media (eg, a signal). Combinations of the above should also be included within the scope of computer-readable media.

Thus, some aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product is a computer-readable medium having instructions stored thereon (and/or encoded) that are executable by one or more processors to perform the operations described herein. May be included. For example, instructions for performing the operations described herein and shown in the accompanying figures.

Moreover, modules and/or other suitable means for carrying out the methods and techniques described herein may be downloaded and/or otherwise obtained by a user terminal and/or base station, where applicable. Please understand that. For example, such a device may be coupled to a server to facilitate transfer of means for performing the methods described herein. Alternatively, various methods described herein allow a user terminal and/or a base station to provide a storage means (eg, a physical storage medium such as RAM, ROM, compact disk (CD) or floppy disk). May be provided via a storage means so that various methods can be obtained when combined or provided with. Moreover, any other suitable technique for providing the methods and techniques described herein to a device may be utilized.

It is to be understood that the claims are not limited to the precise constructions and components shown above. Various modifications, changes, and variations may be made in the structure, operation, and details of the methods and apparatus described above without departing from the scope of the claims.

100 wireless networks
102a macrocell
102b macro cell
102c macro cell
102x pico cell
102y femtocell
102z femtocell
110 Base Station (BS)
110a BS
110b BS
110c BS, macro BS
110r relay station
110x BS
110y BS
110z BS
120 UE, user equipment, user terminal
120r UE
120x UE
120y UE
130 network controller
200 Distributed Radio Access Network (RAN), local architecture, architecture
202 access node controller (ANC)
204 Next Generation Core Network (NG-CN)
206 5G access node
208 TRP, DU
210 Next Generation AN (NG-AN)
300 distributed RAN
302 Centralized core network unit (C-CU)
304 Centralized RAN unit (C-RU)
306 DU
412 Data Source
420 processor, transmit processor
432 modulator, BS modulator/demodulator
432a to 432t modulator (MOD)
434 antenna
434a to 434t antenna
436 MIMO detector
438 processor, receiving processor
439 Data sink
440 controller/processor, processor
442 memory
444 scheduler
452 antenna
452a ~ 452r antenna
454 demodulator
454a-454r Demodulator (DEMOD)
456 MIMO detector
458 processor, receiving processor
462 Data Source
464 Processor, Transmit Processor
466 processor, TX MIMO processor
480 controller/processor, processor
500 figures
505-a 1st option
505-b second option
510 Radio Resource Control (RRC) layer
515 Packet Data Convergence Protocol (PDCP) layer
520 Radio Link Control (RLC) Layer
525 Medium Access Control (MAC) layer
530 Physical (PHY) layer
600 figures
604 DL data part
606 Common UL part
700 figures
702 Control part
704 UL data part
706 Common UL part
1200 movements
1200A operation
1600 operation

Claims (48)

A method for wireless communication by a transmitter, comprising:
Identify one or more groups of sequences that have the same value in a first set of common demodulation reference signal (DMRS) tone locations and each sequence in a group that has a second set of common DMRS tone locations Steps,
Transmitting a sequence from the one or more groups of sequences in a plurality of tones of at least one short burst symbol to convey at least one information bit. The method of claim 1, wherein the second set of common tone locations is greater than the first set. The method of claim 1, wherein the first set of common tone locations has zero or more common tone locations. The method of claim 1, wherein the second set of common tone locations has at least one common tone location. A method for wireless communication by a receiver, comprising:
Receiving a sequence transmitted in a plurality of tones of at least one short burst symbol, said sequence carrying at least one information bit;
One or more groups of sequence hypotheses that have the same value in a first set of common demodulation reference signal (DMRS) tone locations, and each sequence hypothesis in the group that has a second set of common DMRS tone locations. An identifying step,
Performing group-level channel and noise interference estimation based on tone locations for the DMRSs in the group;
Evaluating the corresponding sequence hypothesis in the group using the channel and noise interference estimates for each group in the one or more groups;
Determining the received sequence and the transmitted information bits based on the evaluation. The method of claim 5, wherein the second set of common tone locations is greater than the first set. The method of claim 5, wherein the first set of common tone locations has zero or more common tone locations. The method of claim 5, wherein the second set of common tone locations has at least one common tone location. The method of claim 5, wherein performing a channel and noise interference estimate for each group comprises estimating an equivalent noise interference variance for each hypothesis of that group. The method of claim 5, wherein the evaluation comprises selecting a sequence hypothesis having a maximum performance metric generated based on the channel and noise interference estimates. The method according to claim 5, wherein a sequence is selected only if the corresponding equivalent noise interference variance is less than a threshold. The method of claim 5, wherein the first set of common tone locations includes DMRS tone locations for every four tones. The method of claim 5, wherein the second set of common tone locations comprises DMRS tone locations for every two tones. The method of claim 5, wherein each sequence hypothesis corresponds to a base sequence or a shifted version of the base sequence. A method for wireless communication by a user equipment (UE), comprising:
Determining resources within a set of resource blocks (RB) allocated for at least one of a short physical uplink control channel (PUCCH) or a short physical uplink shared channel (PUSCH),
Determining a pattern for multiplexing at least one type of reference signal (RS) with the short PUCCH or the short PUSCH;
Transmitting the short PUCCH or the short PUSCH on the determined resource multiplexed with the RS according to the pattern. 16. The method of claim 15, wherein the resource comprises multiple clusters of tones. The method of claim 16, further comprising performing joint coding across the plurality of clusters. 16. The method of claim 15, wherein the allocated resources include a subset of tones corresponding to one or more comb structures. 19. The method of claim 18, wherein each comb structure has a pattern for multiplexing the RSs according to a ratio of tones. 19. The method of claim 18, wherein all tones of comb structure are used for the RS. The RS includes a sounding reference signal (SRS),
The first and second UEs transmit short PUCCH or short PUSCH using the same RB,
The short PUCCH or the short PUSCH from the first UE is multiplexed with SRS according to a first comb structure, while the short PUCCH or the short PUSCH from the second UE is a second 19. The method of claim 18, wherein the method is multiplexed with SRS according to a comb structure. 16. The method of claim 15, wherein the short PUCCH or the short PUSCH spans at least two symbols. The resources allocated to the short PUCCH or the short PUSCH in each symbol at least partially overlap,
23. The method of claim 22, wherein for at least partially overlapping resources, the number of demodulation reference signal (DMRS) tones is less than the total number of DMRS tones for the at least two symbols when transmitted separately. .. 23. The method of claim 22, wherein for at least partially overlapping resources in the set of RBs, demodulation reference signal (DMRS) tones are used for channel estimation on the at least two symbols. 23. The method of claim 22, wherein joint coding is used over the at least two symbols. 23. The method of claim 22, wherein the RS comprises a demodulation reference signal (DMRS) and at least one other type of RS. 27. The method of claim 26, wherein resources are allocated for DMRS in only one of the at least two symbols. 27. The method of claim 26, wherein resources are allocated for the at least one other type of RS in only one of the at least two symbols. The method of claim 15, wherein one or more bits for at least one of a scheduling request (SR) or an acknowledgment (ACK) is modulated on the demodulation reference signal (DMRS) tone of the short PUCCH. .. The scheduling request (SR), acknowledgment (ACK) and channel quality indicator (CQI) one or more bits are coded together and transmitted following the transmission of the short PUCCH. The method described. One or more bits for Scheduling Request (SR), Acknowledgment (ACK) and Channel Quality Indicator (CQI) are coded alone and transmitted following transmission of one or more short PUCCHs. The method according to Item 15. 32. The method of claim 31, wherein the resources for the independently coded and transmitted bits are adjacent to each other. 16. The method of claim 15, wherein the short PUSCH and the short PUCCH are separately coded and transmitted. 34. The method of claim 33, wherein the RBs for the short PUCCH and the short PUSCH channels are adjacent to each other and the channels are transmitted alone. 16. The method of claim 15, wherein the short PUSCH and the short PUCCH are jointly coded and jointly transmitted. A device for wireless communication by a transmitter, comprising:
Identify one or more groups of sequences that have the same value in a first set of common demodulation reference signal (DMRS) tone locations and each sequence in a group that has a second set of common DMRS tone locations At least one processor configured to
A transmitter configured to transmit a sequence from the one or more groups of sequences within a plurality of tones of at least one short burst symbol to convey at least one information bit. ,apparatus. 37. The apparatus of claim 36, wherein the second set of common tone locations is larger than the first set. 37. The apparatus of claim 36, wherein the first set of common tone locations has zero or more common tone locations. A device for wireless communication by a receiver, comprising:
A receiver configured to receive a sequence transmitted within a plurality of tones of at least one short burst symbol, said sequence carrying at least one information bit, and
At least one processor, said at least one processor,
One or more groups of sequence hypotheses that have the same value in a first set of common demodulation reference signal (DMRS) tone locations, and each sequence hypothesis in the group that has a second set of common DMRS tone locations. To identify,
Performing group-level channel and noise interference estimation based on tone locations for the DMRSs in the group;
Evaluating the corresponding sequence hypothesis in the group using the channel and noise interference estimates for each group in the one or more groups;
An apparatus configured to: determine the received sequence and the transmitted information bits based on the evaluation. 40. The apparatus of claim 39, wherein the second set of common tone locations is larger than the first set. 40. The apparatus of claim 39, wherein the first set of common tone locations has zero or more common tone locations. A device for wireless communication by a user equipment (UE),
Determining resources within a set of resource blocks (RBs) allocated for at least one of a short physical uplink control channel (PUCCH) or a short physical uplink shared channel (PUSCH), and at least one At least one processor configured to determine a pattern for multiplexing a type of reference signal (RS) and the short PUCCH or the short PUSCH,
A transmitter configured to transmit the short PUCCH or the short PUSCH on the determined resource multiplexed with the RS according to the pattern. 43. The apparatus of claim 42, wherein the resource comprises multiple clusters of tones. 44. The apparatus of claim 43, further comprising performing joint coding over the plurality of clusters. 43. The apparatus of claim 42, wherein the allocated resources include a subset of tones corresponding to one or more comb structures. The RS includes a sounding reference signal (SRS),
The first and second UEs transmit short PUCCH or short PUSCH using the same RB,
The short PUCCH or the short PUSCH from the first UE is multiplexed with SRS according to a first comb structure, while the short PUCCH or the short PUSCH from the second UE is a second 46. The apparatus of claim 45, multiplexed with SRS according to a comb structure. 43. The apparatus of claim 42, wherein the short PUCCH or the short PUSCH spans at least two symbols. Resources allocated to the short PUCCH or the short PUSCH in each symbol at least partially overlap,
43. The apparatus of claim 42, wherein for at least partially overlapping resources, the number of demodulation reference signal (DMRS) tones is less than the total number of DMRS tones for two symbols when transmitted separately.

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